A couple years ago I replaces a 1960's vintage with an American Standard 1.6G/flush model.
Its one from Lowes that claims to flush a bucket of golf balls. I haven't tried to flush golf balls
, but this is very impressive, I've never clogged it. YMMV
the newer designs work alot different, I think most of the flush water is aimed at the drain, so it sucks the waste down.
Being on a well and septic by myself I'm not that concerned about the water usage, I wanted a toilet that works.
It is much easier to clean too.